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Code of Federal Regulations Title 40. Protection of Environment § 40.63.1653 Opacity standards

Current as of January 02, 2025 | Updated by Findlaw Staff

No owner or operator shall cause emissions exiting from a shop due solely to operations of any affected submerged arc furnace, to exceed 20 percent opacity for more than one 6–minute period during any performance test, with the following exceptions:

(a) Visible particulate emissions from a shop due solely to operation of a semi-closed submerged arc furnace, may exceed 20 percent opacity, measured as a 6–minute average, one time during any performance test, so long as the emissions never exceed 60 percent opacity, measured as a 6–minute average.

(b) Blowing taps, poling and oxygen lancing of the tap hole;  burndowns associated with electrode measurements;  and maintenance activities associated with submerged arc furnaces and casting operations are exempt from the opacity standards specified in this section.

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Cite this article: FindLaw.com - Code of Federal Regulations Title 40. Protection of Environment § 40.63.1653 Opacity standards - last updated January 02, 2025 | https://codes.findlaw.com/cfr/title-40-protection-of-environment/cfr-sect-40-63-1653/

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